For customers looking for the module with Built in Antenna and 16K RAM option:MDBT40-256V3 deployed Chip Antenna and offers a excellent connectivity ability.MDBT40-P256V3 deployed PCB Antenna and offers a fair connectivity ability.

For customers looking for the module with Built in Antenna and 32K RAM option:MDBT40-256RV3 deployed Chip Antenna and offers a excellent connectivity ability.MDBT40-P256RV3 deployed PCB Antenna and offers a fair connectivity ability.

MDBT40-DB demo board is designed for quick testing and debugging without building your own board. The board is only available with MDBT40-256RV3 (32K RAM / Chip Antenna) module.